Water-heater.



f EPATENTED JAN, i4, mw.

'5. W. DUNN. WATER HEATER. APPLIGATIQN FILED FB. 14, 1907.

a SHEETS-SHBET 1. f

.211 l 1.3.1 Il,

WITNESSES:

PATENTED JANg1'4, 1908,.

W. DUNN. y lWATER HEATER. APPLOATIUN FILED VPEB. 14, 1907. l

Wim/asses:

, l Be it known that I EMANUEL W. DUNN,-

marron sfrarss Irafrsrvr cierres.

EMANUEL W. DUNN, OF SAN JOSE, CALIFORNIA.

l WATEHFHEATER. I

No, emacs.

'To all-whoa@ tima/y concern: l

. the following is a specification;

My invention relates to an apparatus which is especially designed for the heating and ciroulation of water.

It consists 1n a combination of arts, and

vin details of construction which i l be more fully explained by reference to the accom.

panyng drawings, in which- I 1gure 1 is a vertical section of the main portion of the heater. Fi 2 shows the connection of the heater wit a storage tank. Fig. 3 is a partial elevation and section showing the parts connected to heat the water in two sta es.

It is t 'e ob'ect of my invention to provide a means for t 1e rapid heatii of water, and

means-for storing and circula ing said water.

As shown in the drawings, A is a casino which in the present case is shown formed ci vertical' concentric shells having stay-bolts 5 at suitable intervals, by which the walls of the casing are maintained in proper position,

and any placement by internal pressure is. revented. l

ithin the annular chamber A of the cas-l 'ing is iitted a coil 14, the "upper endv 7 of which may connect'with a discharge, er with the upper end of the .casing A, and the lower` end 6 may connect with the casing A, or with an inlet so that there may be a free circula- ,tion of water through the two parte as will be' hereafter described. A burner plate or base y I Amade of a pro riate refractorA substance is placed wit 1n t e lower part o' the chamber A. The side walls of this base or plate are sufficiently high to receive the impact of Y the burnino'- Gases or flame, and it also serves to retain. tliae lheat and transmit it to the inner Walls of the cllamberA. .portion of the burner-plate rises a defleotor 20.

17 is an air shaft located vertically within the coil le the lower end oi this shaft extending downward to a point just below theltop of the deliector 20. rllhis air shaft is in closed within a collar 18 which is 'fixed to the top oi! the casing A, or otherwise'suitably supported, `and by means of set screws the air-tube is held in place. By loosening the set screws 'the tube may ybe raised or depressed to adjust Specification of Letters Patent.

' Application filed February 14.1907.. Serial No. 357.257-

Frorn the central .Patented ras. 1s, 190s.

1it with Arelatio'n to the bonner-plate or' fire 21 is an oil feed pipe receivin its'supplyy from any suitable source, and t `s pi e extends down throu h the air-shaft wltli its lower end at a su cient distano/e above the deiiector 20. This oil pipe may be secured,v

to the air-shaft, and movable therewith by means `of a'clainp fitting the upper end ofthe ainpipe, and having a' locking screw 23.

The pipe is locked into tlie'clam'p by a similar screw 22. i

Oil is admitted through this central pipe, dropping u on the deflector 20 where it may be ignited y introdcin a piece of burning apen;` or other device trough. the door lO 1n the side of the .chamber A; and when ignition' takes place, the flame will be sup lied with oxygen by a-downward draft o air,'

which may be in the form of aforce feed, if desired, .until the air is heated, and a draft is established exterior to the air tube, and with- Y i in the chamber A. The oil ialling upon the deilcctor and burnlenplate is thus supplied with sullicient air for its perfect-combustion, and the outward movement of the air from the bottom of the pipe', causes a radial diver- O'encc of .the oil vapor .and products of comzliustion, so that the whole interior of the beate ing chamberis iilled/With the burning gases. The/se,` gases rising upwardl rapidly heat the coil 1,4, and `/the interior o the chamber A', in a lesser 'degree; thus causing a circulation *of thewate 'l between fth, louble-walls or shells ofA the casing, andi/rising through the coil is delivered through theconnection 7 into the upper part of the sail-space, 'as in'Fig. 1, orto a discharge/'as irl/Fig. 3. -The products of oombustion are conveyed away from the a paratus by a' chimney or escape flue l. ater which is drawn from "the spacel r more outlet pipes 3 connected with the u per part of the space between the doube walls of the casing, and water may be suppliedto the lower bart of the space by a pipe or connection as at' 8.v

in vorder to provide for a large supply of Water from the heater, ll baves'hown a storage tank or chamber 38, the lower part ol" which is connected by a pipe 37 with the inlet as- ;sage 8 of the double-walled casing A, and y a lbranch pipe 8a with the lower part of' the coil, see Fig. 2. The upper part of the coil may connect with the tenir 38 by a pipo 30 icev 4 double Wa ls o which may lead through the Walls of the casingr A, or in other convenient direction, and opens into the tank 38 at a point below the top thereof. ing the up er part of the space between the the casing with a llitting 28 through which the hot water from the whole system may be delivered into the upper part of the storage tank. The pipe 31 is counected with the pipe 30 by a short section of pipe, and suitable fittings as shown at 25; and by means of cockslocated in said pipes, the circulation may be diverted so that the water from the heater may be delivered either into the upper part, or'at a point between the top and bottom of the storage tank 38.

2l) 1s a supply pipe through which cold water may be ai mitted, and said pi e leads down to a point near the bottom ol t 1e storage tank.

The operation will then be as lfollows: When the cook 21a. in the pipe 8 is closed, and the cock 22 in the )ipe 8 is open, and the cock 23 connectine tbe pipe 8 and 31 is closed, water from the bottoni of the tank 38 will pass through the connecting ipe 37, thence through the pi e 8, the va ve 22B,

Aand the pipe 6 into the ower part of the coil 14, thence passing upwardly it is delivered from the u per part'ot1 the coil through the pipe 7, and) by opening; the cock 27 inthe pipe 30 it is delivered directly into the storn age tank 38 vat a point below the top of the tank; the valve' 26 in the pipe 31, being closed. By closingr the valve 22, opening the valve El, and closing the valve 20, water from the lower art of the storage taule will he delivered direetl into the bot tom of space between the ouble Walls of the casing,r A. 1f tho-valve 2l be cloned, and the valve 20 opened, a supply may be inn troduced into the spaeebetween the double walls of thecasing from a source located at some point, not here shown, and from which the supply is received directly into the heating apparatus.

23'* is a pipe shown outside 'of the easingT A in Fig. .2 and inside ofthe chamber A. o said casing in Fig. 3 said pipe connectingn the lower inlet 6 oi' the coil with the upper part of the casing A. By closing` the valve 22a, opening the valve .23, closing the valve 24, and the discharge valve at 33, the hot water produced in the shell of thc heater rising; to the top will return through thc ipe 23, and through thc connection o with t ie. lower art ot' the coil, thus circulating the water Within the heatingr apparatus so as to produce an instantaneous' supply ot hot water. By elosine the. valve 2. a, opening the valve 24, and closing the valve 27 the het water from the storage tank, will pass up through the pipe 3i, thc valve 26 being opened, and will be delivered through the titting 28 and the upper part ol' the storagctanh. By the 31 is another pipe connecterases use of these various pipes and connections, it will be seen that the water lmay be either heated in the casinpr A and the coil 14, and

discharged direetlv 'lor use, or it may be circulated through the coil and casing to raise the temperature of the water rapid y to any desired degree; or it may be circulated through the separate storage tank to supply a large (plant-ity of leither moderately heated.

water ta ien -from the casing A; or water of a higher tcm wrature laken directly from the coil 14.' The whole apparatus terms a very flexible and easily managed source ofsupply.

This apparatus enables me to concentrate the evolved heat simultaneously upon two portions of a heating structure, in such Ia manner as to heat a comparatively small body of water rapidly within one part of the heater, or by passingr the water through a second portion, or a storage tank and returning it to the coil or 'first part ot the heater, a large body of water may be heated.

it will be obvious that either a natural or a forced air-draft may be employed by extending the ainduct as at 17, and roviding a branch 17 with Agates to eaci as at 17" so that one branch may be used for a. natural, and the other ior a Forced draft.

Having thus described my invention, what l claim andA desire to secure by Letters Pat# ent iS- 1. ln a waterdieating apparatus, theeombination of a verticallyalisposed casing having an interior chamber with a surrounding water-space, a coil located within said chamber, eonneotions between the coil and the said water-space, water supply and distrib uting means, closures for the top and bottom of vSaid chamber, an escape-hue from the uper part of the Chamber, a hydro-carbon luel-pipe leadingdown' Within the coil and discharging at the lowerv end, a centrallydis )oecd air-pipe inclosing Said fuel-pipe. and a burner-plate located in the lower mrt of said chamber, upon the surface. ol' w lich late the fuel is discharged and ignited, and' 'rom which it is delivered radially and below the bottom of the airdiipe lo risc around the coil and within said chamber.I

2. ln a water-.heating apparatus, the combination of a vertically@lisposed casing hav.

ing an interior chamber with a surrounding water-space, a coil located within said cham ber haviin;Y connection with'said waterspace, water snpplv and distributing means,

if i d f h a reha( tory base closing trie lower en o t e chamber, and terminen burner-plate, a fuelsupply pipe extending vertically'` down through the center of the coil and discharging fuel directly upon the burner-plate, an

air-euppl,r pipe open at both ends and ineloeing the 'fuel-pipe, and extendingy downwardly to a point contiguous to the burnon plate, means oredjusting the air and oil pipes with ion to the burner-plate, a

4p 1,ection of the products of tion. l

4. In a water-heating apparatus, vthe com.

`ber with a surrounding water-space,

closed top for the yinteriorchamber, and a ifected, aclosed top for oi`,combus a discharge lue for the products binationof ar casing having an interiorcham vertically-disposed in said' cham through the ber with the surrounding water-s ace, a coil er havingcirculating connection with said Water-space, a burner-plate located below the coil and forming a closure jfor the bottom o'f said chamber, a down-draft air-'flue contiguous to the coil, the lower end of the due being located near the surface of the burnerlplate, a

fuel-l. discharge pipe Y extending dowrnzvardly line and terminating contiguous tothe burner-plate, land inletv4 and outlet pipes connectingwiththe bottom andtop of the water-space ofsaidcasing. v

5. in a water-,heating apparatus, the cornbinationor' the casing having an interior vchamber with a surrounding water-sp ace,` a

.storage tank',

vand the bottom of the coil. t

coil vertically-disposed in said chamberand having circulating connection with said 40 water-space, means withinsaid chamber for heating said. coil said means including a hy-l dro-carbon supply ipe and an inclosing down-draft airipe, oth entering the charnber to a point a ove the' lower end thereof, a connections between. the upper and lower ends of'said tank andf the coil, mea-ns connecting said tank with the water space oi the casing, and between the lower part of. the .storage tank 6. in a'water-heating apparatus', the combination of a casing having an interiorcham-A ber-with a surrounding water-space',

4and the coil! respectively, connections a. downi fueldevice centrally yheater including a down-'draft airvthe coil7 a fuel conductor discharging a branchconnection y nly hand 1n presence of nesses a coil. I verticallywlisposed in said chamber and hav-j ing circulating connectionwithsaid water- 5t s ace, means forlapplying heat within the c amber and about said coil, the storage tank andl asupply pipe therefor, connections between the bottom of the storage tank and the .bottom oi the water-space of the casing tween the upper part of the storage tank and the .upper part of the water-space and ,coil respectively, an intermediate coupling between the coil and water-space connections,

and cocks whereby the liow of water may be diverted through either 'of the connections with the storage tank.

7; An apparatus for, heating water suc- 'cessive' stages, said apparatus including a casin 'havmg an interior chamber with a surroun ing water-space, a flown-draft heating vertically '-l-disposed vcoil .surrounding the down-draft ipe and having circulating connection wit said water-space, .through which. water may be circulated through said water-space yand coil respec Itively, and means for changing the direction of the llowof the water.

8; In a waterheating apparatus, the come bination ,of a casmg having an interior charnber with a surrounding water-space, a coll connections coated insaid. chamber, a

vertically-disposed in saidchamber having circulating connection with said water-space,- a heater WithinI the chamber and heating the same and the surrounding water, said heater `including a down-draft air-flue located with interior fuel conductor in the coil, and an dischar ing'within the lower end of 'the airflue an -belcw said coil.

9. ,ln a .Waterheating apparatus, the cornbination of a casing having an interior cham-- ber wlth a surrounding Water-space, a coll,

within said chamber having connection with said 'water-space, a unitary. heater for said vthe w ater in saidy s ace, sai

ue within sub and a chamber an stantiallywithin lthe mouth of the burner-'plateand deilector.

In testimony whereof I have hereunto set two subscribing witi, EMA-NUEL WQDUNN; Witnesses:

f IS. H; Nonnen,

' FREDERICK E, MAYNARD.' 

